To those who look at pixiv a lot. Right now I strongly advise you to not look up the Madoka magica tag or anything related to madoka for a few days. There is a specific artist who is uploading in masses of extremely horrific images and cryptic and eerie illustrations followed by death threats and murder intentions that are causing a huge commotion among the fans and the pixiv staff.

There’s also a trend on twitter called “Don’t search for Madoka on pixiv” https://twitter.com/nyannko78/status/336500216188526592

Though if you insist on seeing these images in curiosity, here’s the artist, please take precaution:
http://pixiv.net/member.php?id=3301850